refactor: remove compatibility of video thumbnails

src/api/asset.js

@@ -24,7 +24,7 @@ export function getAssets (query) {
         item.thumbnail = item.keyName
       }
       if (item.type === AssetType.VIDEO && item.screenshot) {
-        item.thumbnail = item.screenshot === 'analyzing' ? void 0 : `img/${item.screenshot}`
+        item.thumbnail = item.screenshot === 'analyzing' ? void 0 : item.screenshot
       }
     })
     return {